What type of roller furling?
Since I donn't own a 33.5 I don't know if they came w/ roller furling or what type it might be. If it is Harken, just e-mail their Technical support folks (www.Harken.com website gives you the address). They were very quick to respond and gave great advice. If it is Hood or any other, try their websites. They too may have technical support like Harken.
